Cita APA (7a ed.)

Heron, J. (2006). Helping the client: : a creative practical guide (5th ed.). Sage.

Cita Chicago Style (17a ed.)

Heron, John. Helping the Client: : A Creative Practical Guide. 5th ed. London: Sage, 2006.

Cita MLA (9a ed.)

Heron, John. Helping the Client: : A Creative Practical Guide. 5th ed. Sage, 2006.